CN114669388A - Pre-screening device applied to semi-autogenous grinding and screening process thereof - Google Patents
Pre-screening device applied to semi-autogenous grinding and screening process thereof Download PDFInfo
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- CN114669388A CN114669388A CN202210409167.8A CN202210409167A CN114669388A CN 114669388 A CN114669388 A CN 114669388A CN 202210409167 A CN202210409167 A CN 202210409167A CN 114669388 A CN114669388 A CN 114669388A
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- 238000012216 screening Methods 0.000 title claims abstract description 56
- 238000000227 grinding Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005507 spraying Methods 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 6
- 239000010419 fine particle Substances 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/55—Cleaning with fluid jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a pre-screening device applied to semi-autogenous grinding and a screening process thereof, and belongs to the technical field of pre-screening of semi-autogenous grinding machines. The invention comprises a multilayer vibrating screen, wherein a semi-autogenous mill is arranged at the output end of the multilayer vibrating screen above the screen, and a slurry box is arranged at the output end of the multilayer vibrating screen below the screen; the top of the multilayer vibrating screen is provided with the spraying component, the invention has low cost, simple flow and stable discharging, and can effectively screen out qualified fine particles in raw ore feeding, the spraying component can accelerate the removal of solid particles on a net surface to prevent the net surface from being blocked, and is also beneficial to washing away fine ore particles adhered to large ores and accelerating the separation of the fine ore particles, and undersize products of the lowest layer of the multilayer vibrating screen enter an ore pulp box and then enter a hydrocyclone for classification or directly enter a classification process, so that the load of a semi-autogenous mill can be effectively reduced, the classification efficiency of the subsequent hydrocyclone is improved, and considerable economic benefits are brought to a factory selection.
Description
Technical Field
The invention relates to the technical field of pre-screening of semi-autogenous mills, in particular to a pre-screening device applied to semi-autogenous mills and a screening process thereof.
Background
In recent years, the traditional three-stage crushing process is replaced by the SAB (semi-autogenous grinding and ball milling) crushing process mostly adopted in large-scale mines at home and abroad, and the process has the advantages of small quantity of equipment, simple process, large treatment capacity, small equipment maintenance, small occupied area, high production efficiency, small dust emission, easiness in realizing the automatic control of the ore grinding process and the like. In the SAB crushing and grinding process, raw ores directly enter a semi-autogenous mill for grinding, but the proportion of the particle size of some raw ores below 200 meshes accounts for 10-15%, and the 200-mesh ore particles basically achieve monomer dissociation, do not need to enter a mill for grinding, and can directly enter a subsequent sorting process. A large amount of raw ore particles with the particle size of less than 200 meshes enter a grinding machine, on one hand, the over-grinding phenomenon is easy to generate, on the other hand, the part of the ore particles occupy the effective grinding amount of the grinding machine, and the capacity of the grinding machine is influenced. Aiming at the problems, a pre-screening process applied to semi-autogenous grinding and a screening device thereof are designed.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects of the prior art, provides a pre-screening device applied to semi-autogenous grinding and a screening process thereof, has low cost, simple flow and stable discharge, overcomes the defects that the prior raw ore is not classified before being milled, all the raw ore is milled to influence the mill efficiency and cause over-milling easily, can effectively screen out the raw ore to qualified fine particle fraction in the ore, can effectively reduce the load of the semi-autogenous mill, improves the classification efficiency of a subsequent hydrocyclone, and brings considerable economic benefit for plant selection.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a pre-screening device applied to semi-autogenous grinding and a screening process thereof, which comprises a plurality of layers of vibrating screens, wherein the input ends of the plurality of layers of vibrating screens are provided with belt conveyors, the output ends of the plurality of layers of vibrating screens on the screen are provided with semi-autogenous grinding machines, and the output ends of the plurality of layers of vibrating screens under the screen are provided with ore pulp boxes;
the top of the multilayer vibrating screen is provided with a spraying assembly, and the input end of the spraying assembly is provided with a high-pressure water inlet.
Furthermore, the surface of the slurry box is connected with a slurry pipe, and one end of the slurry pipe is connected with a hydrocyclone.
Further, multilayer shale shaker include first layer sifter, second floor sifter, third layer sifter and baffle, first layer sifter, second floor sifter, third layer sifter are connected through the baffle along the vertical direction, the sieve mesh size of first layer sifter is 80mm, the sieve mesh size of second layer sifter is 20mm, the sieve mesh size of third layer sifter is 0.074mm, the distance between each layer sifter is 80 mm.
Furthermore, one end of the high-pressure water inlet is connected with the water tank.
Furthermore, the spraying assembly is vertically arranged at 90 degrees, the spraying assembly is provided with a plurality of groups and is arranged right above the multilayer vibrating screen at equal intervals, and the group number of the spraying assembly is matched with the length of the screen surface of the multilayer vibrating screen.
Furthermore, the spraying assembly comprises a spraying pipe and spraying pipe water distribution holes, and the spraying pipe water distribution holes are arranged at intervals along the length direction of the spraying pipe.
A screening process applied to a pre-screening device of a semi-autogenous mill comprises the following steps:
the method comprises the following steps: conveying the raw ore to the upper part of a multilayer vibrating screen by a belt conveyor for screening;
step two: the spraying assembly sprays aiming at the multilayer vibrating screen and flushes mineral aggregates on the screen;
step three: undersize products of the multilayer vibrating screen are conveyed to an ore pulp box and then conveyed to a hydrocyclone for classification through an ore pulp pipe;
step four: conveying oversize products of the multilayer vibrating screen to a semi-autogenous mill for grinding;
step five: conveying the output product of the semi-autogenous mill to a grading sieve for screening;
step six: the oversize product of the classifying screen is settled sand, and the settled sand is conveyed back to the semi-autogenous mill for secondary ore grinding;
step seven: conveying the undersize product of the grading sieve to a hydrocyclone for grading;
step eight: sorting overflow products of the hydrocyclone;
step nine: and conveying the settled sand product of the hydrocyclone to a ball mill.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
before the semi-autogenous grinding, the invention aims to discharge qualified fine particles of 200 meshes in the raw ore feeding in advance, the matched screening equipment comprises a multilayer vibrating screen, a spraying component and an ore pulp box, the spraying component is arranged right above the multilayer vibrating screen and vertical to the vibrating direction, so that solid particles on a net surface can be removed quickly, the net surface can be prevented from being blocked, fine ore particles adhered to a large ore can be washed away, the separation of the fine ore particles is accelerated, an oversize material outlet of the multilayer vibrating screen is connected with a feed inlet of the semi-autogenous grinding machine, and undersize products at the lowest layer enter the ore pulp box and then enter a hydrocyclone for classification or directly enter a separation process.
The method has the advantages of low cost, simple flow and stable discharge, overcomes the defects that the prior raw ores are not classified before being ground, all the raw ores are ground to influence the grinding efficiency, and the over grinding is easily caused, solves the problems that the ores below 200 meshes of the raw ores are directly ground, the over grinding is easily caused, and the capacity of a semi-autogenous grinding machine is insufficient, can effectively screen out the raw ores in qualified fine grain grades, can effectively reduce the load of the semi-autogenous grinding machine, improves the classification efficiency of a subsequent hydrocyclone, and brings considerable economic benefit for a plant.
Drawings
FIG. 1 is a top view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a multi-layer shaker of the present invention;
FIG. 3 is a process flow diagram of the present invention.
In the figure: 1. a belt conveyor; 2. a semi-autogenous mill; 3. a hydrocyclone; 4. a plurality of layers of vibrating screens; 41. a first layer of screening surface; 42. a second layer of screening surface; 43. a third layer of screening surface; 44. a baffle plate; 5. a high pressure water inlet; 6. a spray assembly; 61. a shower pipe; 62. water distribution holes of the spray pipe; 7. a slurry tank; 8. a slurry pipe.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1
As can be seen from fig. 1 to 3, the pre-screening device applied to semi-autogenous grinding and the screening process thereof in the embodiment comprise a plurality of layers of vibrating screens 4, wherein the input ends of the plurality of layers of vibrating screens 4 are provided with belt conveyors 1, the output ends of the plurality of layers of vibrating screens 4 on the screen are provided with semi-autogenous grinding machines 2, and the output ends of the plurality of layers of vibrating screens 4 under the screen are provided with pulp boxes 7;
the top of multilayer shale shaker 4 is provided with spray assembly 6, erodees the mineral aggregate on the multilayer shale shaker 4, and spray assembly 6 is established directly over multilayer shale shaker 4, and spray assembly 6's input is provided with high-pressure water inlet 5, and the one end and the water tank of high-pressure water inlet 5 are connected, and spray assembly 6 is 90 perpendicular settings, and spray assembly 6 is equipped with the multiunit and sets up at multilayer shale shaker 4 directly over the equidistance interval.
The spray assembly 6 is perpendicular to the movement direction of the screen surface, each high-pressure nozzle is 60mm at intervals, water sprayed by the spray assembly 6 can effectively reduce dust on the multilayer vibrating screen 4, fine ore powder on large ore particles can be washed away, and blockage caused by accumulation of materials on the screen surface can be prevented.
The spray assembly 6 comprises a spray pipe 61 and spray pipe water distribution holes 62, wherein the spray pipe water distribution holes 62 are arranged at intervals along the length direction of the spray pipe 61.
The surface of the pulp box 7 is connected with a pulp pipe 8, one end of the pulp pipe 8 is connected with the hydrocyclone 3, and the pulp can enter the hydrocyclone 3 for classification through potential difference or pump pond through the transportation of the pulp pipe 8.
As can be seen from fig. 2, the multilayer vibrating screen 4 includes a first layer of screening surface 41, a second layer of screening surface 42, a third layer of screening surface 43 and a baffle 44, the first layer of screening surface 41, the second layer of screening surface 42 and the third layer of screening surface 43 are connected through the baffle 44 along the vertical direction, the size of the screen hole of the first layer of screening surface 41 is 80mm, the size of the screen hole of the second layer of screening surface 42 is 20mm, the size of the screen hole of the third layer of screening surface 43 is 0.074mm, the distance between the screening surfaces is 80mm, on one hand, the three layers of vibrating screen can balance the load between different screening surfaces, on the other hand, the baffle 44 can prevent mineral particles from being washed out of the screening surfaces, and ensure the integrity of mineral feeding.
The size of the screen surface of the multi-layer vibrating screen 4 can be changed according to the change of the ore feeding granularity, and the total area of the screen surface of each layer is the same.
According to the invention, raw ore is conveyed to the multilayer vibrating screen 4 through the belt conveyor 1, ore powder below 200 meshes can be screened down to the ore pulp box 7 step by step through the flushing of the spraying component 6 and the high-frequency vibration of the multilayer vibrating screen 4, and then is conveyed to the hydrocyclone 3 through the ore pulp pipe 8, and the oversize products of the multilayer vibrating screen 4 directly enter the semi-autogenous mill 2.
A screening process applied to a pre-screening device of a semi-autogenous mill comprises the following steps:
the method comprises the following steps: conveying raw ore to the upper part of a multilayer vibrating screen 4 by a belt conveyor 1 for screening;
step two: the spraying assembly 6 sprays the multilayer vibrating screen 4 to wash the mineral aggregate on the screen;
step three: undersize products of the multilayer vibrating screen 4 are conveyed into a pulp tank 7 and then conveyed to the hydrocyclone 3 through a pulp pipe 8 for classification;
step four: conveying the oversize products of the multilayer vibrating screen 4 to a semi-autogenous mill 2 for grinding;
step five: conveying the output product of the semi-autogenous mill 2 to a classifying screen for screening;
step six: the oversize product of the classifying screen is settled sand, and the settled sand is conveyed back to the semi-automatic grinding machine 2 for secondary grinding;
step seven: conveying the undersize product of the grading sieve to a hydrocyclone 3 for grading;
step eight: sorting overflow products of the hydrocyclone 3;
step nine: the sand setting product of the hydrocyclone 3 is conveyed to a ball mill.
The specific screening process is as follows: the method comprises the steps that raw ores are screened in advance to be in a-200 qualified grade before being ground, the input end of a multi-layer vibrating screen 4 is connected with an ore feeder through a belt conveyor 1, the output end of the upper screen of the multi-layer vibrating screen 4 is opposite to the feed inlet of a semi-autogenous mill 2, the bottom of the output end of the lower screen of the multi-layer vibrating screen 4 is connected with an ore pulp box 7, the ore pulp box 7 is located under the vibrating screen at the lowermost layer of the multi-layer vibrating screen 4, the upper portion of the ore pulp box 7 is open, the bottom of the ore pulp box 7 is connected with a hydrocyclone 3 through an ore pulp pipe 8, and a spraying assembly 6 used for washing fine particles adhered to large ores and preventing sieve mesh blockage is installed right above the multi-layer vibrating screen 4.
In the SAB ore grinding production process, the qualified size fraction in the raw ore is pre-separated by utilizing the pre-screening device, and the raw ore below 200 meshes directly flows into the ore pulp box 7 through the sieve bottom under the flushing of the multi-layer vibrating sieve 4 and the spraying assembly 6, so that the over-grinding of the raw ore can be effectively reduced, and the effective treatment capacity of semi-autogenous grinding is improved.
The invention is applied before grinding ore by semi-autogenous grinding, the purpose is to discharge qualified fine particles of-200 meshes in the raw ore feeding in advance, the matched screening equipment comprises a multilayer vibrating screen 4, a spraying component 6 and an ore pulp box 7, three sections of different screen holes are arranged on the multilayer vibrating screen 4, three different sizes are graded by a single equipment, the size of the screen hole of the large-hole screen surface at the uppermost layer is 80mm, the size of the screen hole of the screen surface at the middle layer is 20mm, the size of the screen hole of the screen surface at the lowermost layer is 0.074mm, the distances between the screen surfaces are equal, and the left side and the right side along the vibration direction are connected by a baffle 44 to prevent the mineral feeding from separating from the screen surfaces, the spraying component 6 is arranged right above the first layer of screen surface 41 and perpendicular to the vibration direction, so as to accelerate the removal of solid particles on the screen surface of a grinding machine to prevent the screen surface from being blocked, and also to help to wash away the fine mineral particles adhered on the large ore and accelerate the separation of the mineral, the fine mineral particles are connected with the feed inlet of the semi-autogenous grinding machine, the material outlet of the multilayer vibrating screen 4 is connected with the feed inlet of the semi-autogenous grinding machine 2, the undersize product of the lowest layer enters a slurry tank 7 and then enters a hydrocyclone 3 for classification or directly enters a separation process.
The method has the advantages of low cost, simple flow and stable discharging, overcomes the defects that the prior raw ores are not classified before being ground, all the raw ores are ground to influence the grinding efficiency, and the over grinding is easily caused, solves the problems that the ores below 200 meshes of the raw ores are directly ground, the over grinding is easily caused, and the capacity of a semi-autogenous grinding machine is insufficient, can effectively screen out the qualified fine grain fraction in the raw ores, can effectively reduce the load of the semi-autogenous grinding machine 2, improves the classification efficiency of a subsequent hydrocyclone 3, and brings considerable economic benefit for a plant selection.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (7)
1. A pre-screening device applied to semi-autogenous grinding, comprising a multilayer vibrating screen (4), characterized in that: the input end of the multilayer vibrating screen (4) is provided with a belt conveyor (1), the output end of the multilayer vibrating screen (4) above the screen is provided with a semi-autogenous mill (2), and the output end of the multilayer vibrating screen (4) below the screen is provided with a slurry box (7);
the top of the multilayer vibrating screen (4) is provided with a spraying assembly (6), and the input end of the spraying assembly (6) is provided with a high-pressure water inlet (5).
2. A pre-screening device for semi-autogenous grinding, according to claim 1, characterised in that: the surface of the slurry box (7) is connected with a slurry pipe (8), and one end of the slurry pipe (8) is connected with a hydrocyclone (3).
3. A pre-screening device for semi-autogenous grinding, according to claim 1, characterised in that: multilayer shale shaker (4) include first layer sifter (41), second floor sifter (42), third layer sifter (43) and baffle (44), first layer sifter (41), second floor sifter (42), third layer sifter (43) are connected through baffle (44) along the vertical direction, the sieve mesh size of first layer sifter (41) is 80mm, the sieve mesh size of second layer sifter (42) is 20mm, the sieve mesh size of third layer sifter (43) is 0.074mm, the distance between each layer sifter is 80 mm.
4. A pre-screening device for semi-autogenous grinding, according to claim 1, characterised in that: one end of the high-pressure water inlet (5) is connected with the water tank.
5. A pre-screening device for semi-autogenous grinding according to claim 3, wherein: spray assembly (6) be 90 perpendicular settings, spray assembly (6) are equipped with the multiunit and set up at the equidistance interval directly over multilayer shale shaker (4), the group number of spray assembly (6) matches with the length of multilayer shale shaker (4) sifter.
6. A pre-screening device for semi-autogenous grinding, according to claim 5, characterized in that: the spraying assembly (6) comprises a spraying pipe (61) and spraying pipe water distribution holes (62), wherein the spraying pipe water distribution holes (62) are arranged at intervals along the length direction of the spraying pipe (61).
7. A screening process applied to a semi-autogenous grinding pre-screening device according to claim 1, characterized in that: the method comprises the following steps:
the method comprises the following steps: conveying the raw ore to the upper part of a multilayer vibrating screen (4) through a belt conveyor (1) for screening;
step two: the spraying component (6) sprays the multilayer vibrating screen (4) to wash the mineral aggregate on the screen;
step three: undersize products of the multilayer vibrating screen (4) are conveyed into a slurry box (7) and then conveyed to a hydrocyclone (3) through a slurry pipe (8) for classification;
step four: conveying oversize products of the multilayer vibrating screen (4) to a semi-autogenous mill (2) for grinding;
step five: conveying the output product of the semi-autogenous mill (2) to a classifying screen for screening;
step six: the oversize product of the classifying screen is settled sand, and the settled sand is conveyed back to the semi-autogenous mill (2) for secondary ore grinding;
step seven: conveying the undersize product of the grading sieve to a hydrocyclone (3) for grading;
step eight: sorting overflow products of the hydrocyclone (3);
step nine: and conveying the sand setting product of the hydrocyclone (3) to a ball mill.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210409167.8A CN114669388A (en) | 2022-04-19 | 2022-04-19 | Pre-screening device applied to semi-autogenous grinding and screening process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210409167.8A CN114669388A (en) | 2022-04-19 | 2022-04-19 | Pre-screening device applied to semi-autogenous grinding and screening process thereof |
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| CN114669388A true CN114669388A (en) | 2022-06-28 |
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| CN202210409167.8A Pending CN114669388A (en) | 2022-04-19 | 2022-04-19 | Pre-screening device applied to semi-autogenous grinding and screening process thereof |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2910356Y (en) * | 2006-02-16 | 2007-06-13 | 中国恩菲工程技术有限公司 | Semi-self-grinding ball mill for ores |
| CN202778930U (en) * | 2012-06-09 | 2013-03-13 | 江西耐普矿机新材料股份有限公司 | Preliminary-classification self-returning type drum screen |
| CN104190617A (en) * | 2014-09-05 | 2014-12-10 | 无锡贺邦金属制品有限公司 | Silicon pretreatment device |
| CN105435942A (en) * | 2014-09-16 | 2016-03-30 | 沈阳铝镁设计研究院有限公司 | Bauxite coarse-fine separation grinding method |
| CN106311445A (en) * | 2015-06-24 | 2017-01-11 | 沈阳铝镁设计研究院有限公司 | Crushing classification-ore grinding method for bauxite |
| CN106955841A (en) * | 2017-05-22 | 2017-07-18 | 成都亚联科科技有限公司 | Ore screening apparatus is used in one kind mining |
| CN109201286A (en) * | 2018-11-19 | 2019-01-15 | 洛阳栾川钼业集团股份有限公司 | A kind of grind grading method improving molybdenum ore treating capacity |
| CN109569837A (en) * | 2018-10-30 | 2019-04-05 | 金川集团股份有限公司 | A kind of rock processing handling ambrose alloy sulfide ore |
| CN209663467U (en) * | 2019-01-15 | 2019-11-22 | 山西立恒钢铁集团股份有限公司 | Grading plant before mining mill |
| CN112264182A (en) * | 2020-09-29 | 2021-01-26 | 新疆紫金锌业有限公司 | Crushing and grinding process of low-hardness raw ore |
| CN213193947U (en) * | 2020-05-18 | 2021-05-14 | 唐山国兴实业公司 | Fine-grained imported ore grinding and screening system |
| CN214234982U (en) * | 2021-01-13 | 2021-09-21 | 衡阳县伟恒陶瓷原料有限公司 | Vibrating screen for cleaning albite |
| CN217527799U (en) * | 2022-04-19 | 2022-10-04 | 安徽马钢矿业资源集团姑山矿业有限公司 | Pre-screening device applied to semi-autogenous grinding |
-
2022
- 2022-04-19 CN CN202210409167.8A patent/CN114669388A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2910356Y (en) * | 2006-02-16 | 2007-06-13 | 中国恩菲工程技术有限公司 | Semi-self-grinding ball mill for ores |
| CN202778930U (en) * | 2012-06-09 | 2013-03-13 | 江西耐普矿机新材料股份有限公司 | Preliminary-classification self-returning type drum screen |
| CN104190617A (en) * | 2014-09-05 | 2014-12-10 | 无锡贺邦金属制品有限公司 | Silicon pretreatment device |
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| CN106955841A (en) * | 2017-05-22 | 2017-07-18 | 成都亚联科科技有限公司 | Ore screening apparatus is used in one kind mining |
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| CN209663467U (en) * | 2019-01-15 | 2019-11-22 | 山西立恒钢铁集团股份有限公司 | Grading plant before mining mill |
| CN213193947U (en) * | 2020-05-18 | 2021-05-14 | 唐山国兴实业公司 | Fine-grained imported ore grinding and screening system |
| CN112264182A (en) * | 2020-09-29 | 2021-01-26 | 新疆紫金锌业有限公司 | Crushing and grinding process of low-hardness raw ore |
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Application publication date: 20220628 |